Hoisting apparatus for vehicles



W. SANDERSON.

HOISTING'APPARATUS FOB VEHICLES. APPLICATION FILED OCT- l 6, 1918- Patented June 15, 1920:

2 SHEE1S-SHEET l.

MVEETOR I W4 .SANDERSON.

HOISTING APPARATUS FOR VEHICLES.

APPLICATION FILED OCT. L6, 1918- Patnted June 15, 1920.-

= 2 SHEETS-SHEET 2.

v M5.- 2 2/ 4 l4- 2/ FIG. 5 4

I I- 11- lillll FIG. 4

INgNTOR WM L2 WILLIAM SANDERSON, OF CONNEAU'IVILLE, PENNSYLVAfhl'IA.

FICE.

HOIS'IING APPARATUS FOR VEHICLES. V

Specification of Letters Patent. Patented June 15 1920,

Application filed October 16, 1918. Serial No. 258,358. I

To alliliihomit may concern: 1

Be it known that L'VVILLIAM SANDERsoN,

a citizen of the United States, and resident- Apparatus for Vehicles; and I do hereby declare the following to be a full, clear, and exact description thereof.

My invention relates to dumping vehicles such as truck wagons, automobile trucks, and the like, more especially to hoisting apparatus for moving the body so that the contents will discharge therefrom.

The invention is directed to a type of hoisting apparatus such as shown in an ap- )lication filed by me, Oct. 12, 1917, Serial 0.196291. In such type of hoists in which the derrick is rigidly held against lateral movement of the body of the vehicle, the construction is'open to the objection that if the vehicle happens to be standing on uneven ground when being dumped, the underfraniing will yield to adjust itself in conformity to the ground surface on which it stands and cause the body'to be twisted and moved abnormally, and with it the rail.

. resulting in a binding friction between the rail and the derrick wheel which prevents operation of the lifting apparatus to dump the body.

The primary object of the invention is to providehoistin ap aratus for such vehicles which permits lateral shifting of the hoist ing derrick with respect to the body of the vehicle, and vice versa, and in which the load'of the vehicle naturally adjusts itself by gravity while being elevated or loweredwithout subjecting the parts to abnormal strains.

A further object is to provide simple hand-operated braking means whereby the ,forth and claimed.

lowering of the body or load may be conveniently controlled.

With these and other objects, as will hereinafter appear, the invention consists of the novel structural features as hereinafter set In the accompanying drawings, Figure 1 is a side elevation of a dumping vehicle embodying my invention withthe body in normal lowered position; Fig. 2 is alike view with the body tilted or in dumping position; Fig. 3 is an enlarged transverse'section on the line 3-3,' Fig. 1; Fig. 4.is a side eleva- 2 tion of Fig, 3 looking from the left-hand side of the view; Fig. 5 is a plan View of the top of the'derrick and a portion of the body. Figs. 6, 7 and 8 are enlarged detail views of the brake for controlling the lowering. of the body. I

In the drawings, I have illustrated my invention embodied in a dumping automobile truck, in which the numeral 2 desigllhe hoisting apparatus comprises a derrick frame 5 mounted on the chassis in front of the body, between the body and the seat of. the vehicle. The frame preferably is made of channel iron or flat bar .material and formed substantially V-shape d, having v the legs 6 which converge toward the top of the frame and which terminate in a yokelike head to the derrick, the derrick being v nates the body of the vehicle which is piv- 65 disposed centrally with reference to the central vertical plane of the vehicle. 2 1

The lower ends of the le s are connected to hearing members 7 and 7" which are pivotally mounted one at each side of the frame on the ends of a shaft 8 which extends across and is journaled in bearings 9 on the frame.

The body of the vehicle is provided with a bearing supporting the derrick in loadsustaining position. This bearing prefer-' ably consists of a flat-faced rail '12 secured to the forward end of the body in central verticalposition, and forms in effect a third leg to the derrick against which the derrick leans by engagement with a bearing on the head of, the derrick. The rail extends up abovethe body of the vehicle and terminates is adapted to hook over the bearing on thehead of the derrick when the body of the vehicle is seated on the chassis, and holds the derrick against pivotal movement. The lower end of the rail is provided with a bearing for the reception of a sheave around which the hoisting cable passes, said sheave 95, Q I at its upper end in 'a hook or yoke 12 which r forming the connecting means for the hoisting cable with the vehicle body. The bearing preferably is formed by bending theend of the rail into a loop or yoke 12", which extends below the bottom of the body, the

end portion of the rail terminating in a. l

lateral projectio rIQZ which is bent under and fastened to the body. In thisman'ner I provide a bearing for the sheave beneath bendin the bottom of the body in which the bean ing is braced in such manner as to prevent under lifting stress.

The caring connection between the derrick and its supporting rail forms the main feature of the present invention, and is de- I signed to form a support with the derrick to engage with the rail to take the thrust of the derrick in load-supporting position and is so designed as to permit lateral shifting of the body and the derrick with respect to each other when the vehicle is sulojected to strains which throw these parts out of normal alinement. The bear ng con-- sists of a long straightroller 13which is journaled in a yoke 14 secured to the top of the derrick and forms throughout its length a bearing surface which permits lateral sliding movement on the rail or vice versa, the rdller being of'such length as to project beyond the rail at each side thereof and provides forsnpporting the derrick ec-.

centric to its'normal position. The'yoke in which the roller is ournaled has the end bearing portions I? which extend beyond the diameter of the roller and form stops.

position. Said mechanism comprises a suitable cable winding drum 15 carried on a shaft 16 journaled in the bearings 7 and 7. A cable 17 is connected at one end to the drum, and "extends up to a sheave 18 journaled in the head of the derrick, and passes down and around a sheave l9 journaled in a yoke '12" former-lat the lower end of the rail 12, and then passes'up again i and is secured to the top ofthe derrick, as

The drum is rotated. by simple power gearing consisting of a gear. 22 fast on the shaft 16, said gear meshing with a pinion 23 secured to a stub shaft 24 which is journaled inz'a sleeve 7 of the member 71} The pinion is rotatedhy a crank handle on the shaft 24.

An important feature of the invention is the provision of means for controlling the lowering" it is desirable to return the body to normal position without dumpingit, and ordinarily the operation is accomplished by knocking the holding pawlfree, which pawl is cor monly employed t ojlock the gears against reverse. rotation and alln'minm HM. 1mm. 4

actuating shaft 24 of the body. In many instances;

holding, I provide braking; means consist ing; of a friction disk 30 which is interposed between the relatively stationary or nonrotating member 7 and the pinion of the The disk preferably is rotatably mounted on the pinion shaft and has the actuating handle 3'1, and is provided on its face, adjacent the member 7, with cum members formed as depressions 32 having cam faces which engage projecting cam lugs 33 on the member 7, The

lugs 33 normally (during the hoisting," operation) fit into the depressions of the disk, and allow the disk to be freeoi engagement endwisewith the pinion. When, however, it is desirable to check the speed of the lowering body, the disk is rotated on the shaft in a direction which acts to force the cani faces 32 tmvard the cam faces 33, and

through the cannnin r action. of the lugs or faces the disk is moved longitudinally on the shaft and is forced against the pinion, wedging itself between the pinion and the bearing); member 7. its bearing against longitudinal movement by the pinion at one end of the shaft, and

The shaft is held in' by a Washer and nut 34, respectively at the opposite end, and when the disk is moved longitudinally thereon, friction is also cre ated between the washer and the end of the hearing, thus providing powerful friction means which may be conveniently operated for controlling'the speed of the descending body or for checking and holding the load suspended, It is to he noted that this camminp; action isin the opposite direction to the natural movement of the pinion, 'so that there is no liahility of the cam faces looking together or jamming. indeed, the wedgmg force is fully siriicient to holdthe load upon the application of the brake even against the opposing strain upon the pinion.

It will be seen that with the alcove described bearing connection between the der rick and the rail, that great flexibility is provided between the bed oi the vehicle and the derrick, while at t e same time the bearing allords the means for the stable support, of the derrick for hoisting the load.

While l have described a particular embodiment of the invention, it is to he linden stood that the structural detailsmay he va ried within the scope oil the appended claims. f

lVhat fl claim iss-- l. in a dumping ehicle, the eoinhination with thewehicle frame, or a hotly mounted ....i .LL n

' to dumping position 'ing lifting mechanism, a rail on the frame, means for moving the body to dumpin position comprising a derrick mounted on the frame and including lifting mechanisin, a rail disposed vertically on the end of the body, and an unflanged bearing on the derrick engaging the rail for supporting the derrick, the rail and hearing being adapted to both longitudinal and lateral 7 travel with relation to each other.

3. In a dumping vehicle, the combination with the vehicle frame, of a body mounted on the frame, means for moving the body to dumping position comprising a derrick pivotally mounted on the frame and including lifting mechanism, a rail disposed vertically on the end of the body, and an untlanged bearing on the derrick engaging the rail for supporting the derricknormally centrally alined longitudinally with the rail .and adapted forsupporting the derrick laterally on either side of said central position.

4. In a dumping vehicle, the combination with the vehicle frame, of a body mounted on the frame, meansfor moving the body to dumping position. comprising a derrick mounted on the frame and including lifting mechanism, a rail and an unflanged bearing between the derrick and body, one partthereof having a roller bearing engaging with the other part and providing for both longitudinal and lateral travel between said body and derrick.

5. In a dumping vehicle, the combination with the vehicle frame, of a body mounted on the frame, means for moving the body comprising a derrick pivotally mounted on theframe and includdisposed vertically on the end of the body, and. an unflanged roller bearing on the derrick engaging the rail for supporting the derrick, the rail and roller bearing being adapted to both longitudinal and lateral travel with relation to each other.

6. In a dumping vehicle, the combina tion with the vehicle frame, of a body mounted on the frame, means for moving the body to'dumping position comprising a derrick mounted on the frame and includ ing hoisting mechanism, a rail and an 1111- flanged bearing between the derrick and body including a roller bearing between the same, said roller bearing being of a length greater than the width of the rail to allow of longitudinal and lateral travel between said elements.

7. In a dumping vehicle, the combination with the vehicle frame, of a body moil'nted on the frame, means for moving the be ly on its pivot to dumping position comprising a derrick piv'otally mounted on the frame and including hoisting mechanism. a rail disposed vertically on the end of the body, and

'a roller bearing carried by the derrick adapted to contact with the rail, said roller having a bearing surface of a length greater than the width of the rail for supporting the derrick while allowing both longitudinal and lateral travel between the derrick and body.

'8. In a dumping vehicle, the combination with the vehicle frame, of a body mounted on the frame, means for moving the body to dumping position comprising a derrick pivotally mounted on the frame and including hoisting mechanism, a rail disposed vertically on the end of the body, and a roller journaled in a bearing on the head of the derrick adapted to extend across and project beyond the rail-on each side thereofto forma bearing for supporting the derrick againstthe rail 9. In a dumping vehicle, the combination with thevehicle frame, of a body mounted on. the frame, means for moving the body on its frame comprising a derrick mounted on the frame and including cable-winding mechanism, and a vertical rail on the end of the body, said rail having its lower end bent into a. yoke-like frame for the reception of a cable sheave and thence extending to and terminating under the body and connected thereto.

In testimony whereof, I, the said WIL- LIAM SAnnnnsoN, have hereunto set my hand.

l/VII'JLI AM SANDERSON.

Witnesses: v

FLORENCE V. lanrnan'r, S. F. ARMSTRONG. v 

